Overhead carriage



W. L. BARTON.

OVERHEAD CARRIAGE. APPLICATION man AUG.5.' I92I.

1,433,92 I Patented 001;. 31, 1922.

, A 2SHEETSSHEET l.

k J /l a W. L. BARTON.

OVERHEAD CARRIAGE. APPLICATION FILED AUG-5. 1921.

Patented Oct. 31, 1922.

2 E T SHEET 2- l0 .57 41 50 I S Patented Sl, i922.

PATHNY we v to li it it he n VIILLIAJNI L. BAERTGN, OF VANCOUVER, BRITISH COLUMBIA, CANADA, ASSIGNQR 01 FUETY-FIVE PER GENT 'I'O JOHN 'L. KERR, F VANCOUVER. BRITISH COLUIIIBIA,

CANADA.

OVERHEAD CJFLPJEIAGE.

Application filed August 5, 1321. Serial No. 490 123.

To all QUdO/lt it may comer 22 Be it known that .l, WILLIAM L. Biinrorz.

citizen of the Dominion of Canada, residing at Vancouvcn in the Province of British Columbia- Canada, have invented certain new and useful improvements in Overheed Carriages, o l which thetoilowing is a specification.

This invention relates to an overhead carriage for a wire rope truck line, the object of the invention being to provides means operative from the winding engine for elevoting the load to any desired height in relation to the carriage and for securing it it that desired position of suspension and for releiising it therefrom.

The invention is fully described in the following specification, :reherenre being made. to the drawings by which it is ac "om'panied, in which:

Fig. l is an elevation showing the general arrangement of the track ropes in rehition to the hauling engine and to the outer end-of the truck line with the carriage thereon.

Fig. 2 is :1 plan oi? the some Fig. 3 is a longitudinal section oi the curriage to on eulurgred scale on the line 3- in Fin 4. v

F 4 is a. plan of the carriage.

Fig. 5 is an enlarged detail of the clutch operating mechanism, and

Fig. 6 is a. cross section of the same.

In these drawings 2 and. 3 represent adj cent and parallel lines 01'. a truck rope on which the carriage with its loud may run. At the outer end of the track this rope passes around a. sheave el; and the ends of it are connected to separate drums 5 and 6 of the hauling enginewith provision whereby the drums may he sio'iultiineously rotated in 0pposite directions to move the two lines 2 and 3 endwise in relntion'to one another.

(in these truck ropes it and 3 the carriage 7 is suspended on independent sheaves 8, 9 and 10. 11 which sheaves are mounted to turn freely on their axles secured in the side plates of the carriage. The rope 12 by which the load is e emu-ed to the carriage and the carriage drawn inwardtoward the hauling engine passes over a sheave. 1.3 mounted at the adjacent nd otthe carriu i'e, and is enchored at M adjacent the midlength of the carriage... after passing around it sheave at the outer end. The load isconnected to it hook l6 suspended from u sheave 17 in 'both nut and irictionnlly held :1. liiere the bight or loop of the rope 12 between the sheave and thosnchor lei.

lihe haul-hack line 55 by n iich the carriage is drawn to the outer end of the track, or o which it is held while the load is drawn up to the carriage, conn cted at 56 to the outer end of the carriage. Between theshem" lo and 15 rope 12 passes oi'er d grooved clutch her sezured to the c MEQ'O. Above this fined oar the he. uling i e 18 is a grooved clutch her 19., which is ver- To the cross-head rot-stably con-- it nectcd one end of a. screw 81, the axis of which parallel to the *1 'de bars 30. This screw 31 is carried in a nut 32 and a sleeve 33, the nut iittin the thread oi. the screw, and the sleeve l 1g the tops of the threads with 21. feather secured in the sleeve and movable in (l featherwuy lengthwise cut in. the siren, Both the nut and sleeve 33 are rotatable in a he 35 secured to the upper side of the cur loge frame 7, which hearing has thrust rings 36 grooves in sleeve to prevent endwise movement of either in the heuring.

On the end of the nut which projects form one end of the hearing 35. is held in a manner to he described 2% bevel gear 3?, the teeth of which mesh with thoseof a. corresponding gem 38 re. .lily mounted in a hearing; secured to the time of the c21rridge. The gear 38 and consequently the nut 32 are rotated from theitrzick wheel ot the carriage by an endless chain 39 around sprocket wheels secured to rotate with the track wheel 9 and with the gear wheel 38.

Similarly on the end oi the sleeve 33 in ear to, the teeth of which mesh n .ith those o L a ii. rotsitcbl mounted on the frame of the carriage. and an endless chain drives this genre; by sorockets rotating with the truck wheel 8 and the gear ll respectively.

l i ith this in nism. it the truck wheel 9 is rotated. it mil. rotate the nut on the screw 31 and that nut, being prevented moving endwise by the rings 36 of the bearing will endwise move the screw 31 in either direction according to the direction of rotation of the track wheel 9.

Again rotational movement of the track wheel 8, will, through the mechanism connecting it to the sleeve 33, and screw 31, rotate that, screw and will therefore endwise move it through the nut 32.

As the carriage is moved in the direction of the arrow (C) along the track lines 2 and I), while those lines are stationary in relation to one another, the track wheels 8 and 9 will be rotated in the direction indicated, and by virtue of their chain and bevel wheel n'iechanisms, the wheel 8 will rotate the screw 31 and 9 will rotate the nut- 32 in the same direction. so that no endwise movement-will be imparted to the screw through the nut to actuate the toggle clutch; but if one end 2 of the rope is wound up on its drum 5, while the other 3 is paid off from its drum 6, so as to move the lines 2 and 3 in opposite directions, the screw 31 will be rotated to endwise move it to apply the toggle pressure on the clutch bar 19, and the nut 32 will be rotated in the opposite direction to endwise move the screw in the same direction and the screw being free to move endwise in the sleeve. the endwise movement of the screw will be doubled to apply the clutch.

Obviously, ii. the lines 2 and 3 are moved in opposite directions to what is shown. by the arrows (A) and (B), the screw will be moved in a direction to release the clutch. These conditions will prevail whether the carriage moving or is stationary on the track ropes 2 and 3.

To avoid undue pressure being imposed on the toggle mechanism, the bevel gears and it) are trictiona-lly connected to the nut 32 and 33. The means by which this is done is shown in Fig. 5. where the nut and sleeve are shown provided with an integral collar l5 with a friction ring on each side oi? it. ()n the opposite side of the collar to the gear wheel is a ring 46. and the gear wheel and ring 46 are drawn together on the collar and friction rings by bolts 47 having springs on the nuts that the pressure which is imposed may be regulated to what is desired.

In use, the carriage drawn out toward the outer end of the track line by a haul-back line 55, and the load block 16 is lowered to lift its load. After connection to the load the hauling line 12 is drawn in to elevate the load to the carriage, the carriage being held the while by the haul-back line Thereafter the line 2 is drawn in and the line 3 paid out, which opposite movements of the track lines operate the screw 31 and toggle mechanism in the manner explained to grip and secure the hauling rope 12 between 18 and'19 and prevent the load falling from the carriage. riage is drawn along the track lines 2 and 8 by the hauling line 12 and when itarrives at its destination the track lines 2 and 3 are 1. A means for elevating: a load to an overhead carriage and for securing it at any desired position of elevation. said means comprising; the combination with parallel track ropes susceptible of endwise movement in opposite directions. a carriage suitably supported to run on the track rope, a hauling line passing over sheaves on the carriage a load hook connected to the line adjacent its end. a clamp adapted to secure the hauling rope to the carriage. and. means operative by endwise n'ioveinent of the track ropes for securing and releasing the clamp.

.2. A. means for elevating a load. to an overhead. carriage and for securing it at any desired. position of elevation. said means comprising the combination with parallel track ropes susceptible of endwise movement in opposite directions. a carriage suitably supported to run on the track ropes. a hauling line iassing over sheaves on the carriage. and connected to the carriage. a load hook in the bight of the line between its connection to the carriage and one of the sheaves. a clamp adapted to secure the hauling rope to the carriage between the load hook and where the line passes to the haulingrengine. and means operated by cndwise movement of the track ropes for securing and releasing the clamp.

13. A means for elevating a load to an overhead carriage and for se uring it at any desired position of elevation. said means comprising the combination with. parallel track ropes susceptible of endwise movement in opposite directions. a carriage suitably supported to run on the track ropes, a hauling line passing; over sheaves on the carriage and connected to the carriage, a load hook in the bight of the line between its connection to th carriage and one of the sheaves. a clamp adapted to secure the hauling rope to the carriage between the load hook and where the line passes to the hauling engine, and means operated by endwise movement of the track ropes for securing and releasing the clamp, said means comprising a screw rotatably mounted on the carriage and operable from one oi": the" Thereafter the car-- track wheels, a nut threaded to fit the screw, and rotatable from another track wheel of the carriage, and means connected to the end of the screw whereby endwise movement of it operates the clamp.

t. A means for elevating a loadto an overhead carriage and for securing it at any desired position of elevation, said means comprising the combination with parallel. track ropes susceptible of endwise movement in opposite directions, a carriage suitably supported to run on the track ropes, a hauling line passing over sheaves on the carriage, and connected to the carriage, a load hook in the bight of the line between its connection to the carriage and one of the sheaves, a clamp adapted to secure the hauling rope to the carriage between the load hook and where the line passes to tl'iehauling engine, and means operated by endwise movement of the track ropes for securing and releasing the clamp, said means COl1'11 )I'iSiI1g a screw rotatably mounted on the carriage and operable by a friction drive from one of the track wheels, a nut threaded to fit the screw and rotatable by a friction drive from another track wheel of the carriage, and means connected to the end of the screw whereby endwise movei'nent of it operates the clamp.

A means for elevating a load to an overhead carriage and for securing it at any desired position of elevation, said means comprising the combination with parallel track ropes susceptible ofendwise movement in opposite directions, a carriage suitably supported to run on the track ropes, a hauling line connected to the carriage intermediate its ends and passing around a sheave at the outer end of the carriage and over a sheave at the opposite end thereof, asheave carrying a load hook supported in the bight of the hauling line between the connection of the same to the carriage and the sheave at the outer end, a haul-back line connected to the carriage, a clamp bar secured to the carriage between the hauling rope sheaves, a movableclamp bar adapted to press the hauling line into engagement with. the fixed bar, toggle links connecting the movable bar to the carriage, a screw rotatably mounted on the carriage, means for rotating the screw by a friction drive from one of the track wheels of the carriage while pern'iitting endwise movement of the screw in the rotating means, a nut threaded to engage the screw and susceptible of rotational movement but held against endwise movement, means for rotating the nut by a friction drive from a track wheel on the other track rope, a cross-head connected to the screw in a manner permitting rotational n'ioveinent in the connection, a lever pivoted to the carriage one end of which lever connected to the cross-head, and means connecting the medial portion of the toggle links to the lever.

In testimony whereof I afiix L.

mv si 'nature.

nAIfToN. 

